Help me understand this time line (IUI)

After 4 years of TTC I thought I had this done. After starting IUI 3 cycles I'm now just confused!

I use the Clearblue OPK because RE suggested it as easiest- I can't really screw up a smiley face right?! First days seeing it I call and go in next day for IUI. I have been assuming that this 2nd day is the day I O but that's not right, or is it? When I count days to test I count the IUI as 1DPO and then the next day I would say 2dpo1dpiui? But really, am I correct in assuming that might not be correct? Sperm can live for five days so really I could have fertilization within 5 days of IUI and then another 4-6 for implanting? I keep googling this but I can't seem to wrap my head around it! Anyone help?

Comments (2)

They usually want the sperm in there before O. In my case I have IUI, but don't O to the next day. So I would be 1 day past IUI on the O day. Are they doing any other kind of monitoring? Are you taking any meds? A + OPK is the beginning of your 2 most fertile days. If cycle is regular always count back 14 days.

The kits are accurate but it's hard to know exactly when you will ovulate. Are you not on any stim meds? Often, they will recommend clomid or something similar and then do monitoring ultrasounds so they can actually see the follicles the do hcg to trigger when you ovulate to maximize success. If you are not doing this then I would suggest using the clear blue easy advanced digital tests that differentiate between high likeliness and peak likeliness for ovulation. This would mean you need to do the iui within 18-24 hrs do the peak reading.